Annotation of mandoc/mdocml.c, Revision 1.5
1.5 ! kristaps 1: /* $Id: mdocml.c,v 1.4 2008/11/22 18:34:06 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <sys/param.h>
20: #include <sys/stat.h>
21:
22: #include <assert.h>
23: #include <err.h>
24: #include <fcntl.h>
25: #include <getopt.h>
26: #include <stdio.h>
27: #include <stdlib.h>
28: #include <string.h>
29: #include <unistd.h>
30:
31: #include "libmdocml.h"
32:
1.3 kristaps 33: #define BUFFER_IN_DEF BUFSIZ
34: #define BUFFER_OUT_DEF BUFSIZ
1.2 kristaps 35:
1.1 kristaps 36: static void usage(void);
1.5 ! kristaps 37: static int begin_io(const struct md_args *,
! 38: char *, char *);
! 39: static int leave_io(const struct md_buf *,
! 40: const struct md_buf *, int);
! 41: static int begin_bufs(const struct md_args *,
! 42: struct md_buf *, struct md_buf *);
! 43: static int leave_bufs(const struct md_buf *,
! 44: const struct md_buf *, int);
1.1 kristaps 45:
46: int
47: main(int argc, char *argv[])
48: {
49: int c;
50: char *out, *in;
1.5 ! kristaps 51: struct md_args args;
1.1 kristaps 52:
53: extern char *optarg;
54: extern int optind;
55:
1.4 kristaps 56: out = in = NULL;
1.1 kristaps 57:
58: while (-1 != (c = getopt(argc, argv, "o:")))
59: switch (c) {
60: case ('o'):
61: out = optarg;
62: break;
63: default:
64: usage();
65: return(1);
66: }
67:
68: argv += optind;
1.4 kristaps 69: argc -= optind;
1.1 kristaps 70:
1.4 kristaps 71: if (1 == argc)
72: in = *argv++;
1.1 kristaps 73:
1.5 ! kristaps 74: args.type = MD_DUMMY;
! 75:
! 76: return(begin_io(&args, out ? out : "-", in ? in : "-"));
1.1 kristaps 77: }
78:
79:
80: static int
1.5 ! kristaps 81: leave_io(const struct md_buf *out,
! 82: const struct md_buf *in, int c)
1.1 kristaps 83: {
1.4 kristaps 84: assert(out);
1.1 kristaps 85: assert(in);
86:
1.4 kristaps 87: if (-1 != in->fd && -1 == close(in->fd)) {
88: assert(in->name);
89: warn("%s", in->name);
90: c = 1;
91: }
92: if (-1 != out->fd && STDOUT_FILENO != out->fd &&
93: -1 == close(out->fd)) {
94: assert(out->name);
95: warn("%s", out->name);
96: c = 1;
97: }
1.1 kristaps 98:
1.4 kristaps 99: return(c);
1.1 kristaps 100: }
101:
102:
103: static int
1.5 ! kristaps 104: begin_io(const struct md_args *args, char *out, char *in)
1.1 kristaps 105: {
1.5 ! kristaps 106: struct md_buf fi;
! 107: struct md_buf fo;
1.4 kristaps 108:
109: #define FI_FL O_RDONLY
110: #define FO_FL O_WRONLY|O_CREAT|O_TRUNC
1.1 kristaps 111:
1.5 ! kristaps 112: assert(args);
1.1 kristaps 113: assert(out);
114: assert(in);
115:
1.5 ! kristaps 116: bzero(&fi, sizeof(struct md_buf));
! 117: bzero(&fo, sizeof(struct md_buf));
1.1 kristaps 118:
1.4 kristaps 119: fi.fd = STDIN_FILENO;
120: fo.fd = STDOUT_FILENO;
1.1 kristaps 121:
1.4 kristaps 122: fi.name = in;
123: fo.name = out;
1.1 kristaps 124:
1.4 kristaps 125: if (0 != strncmp(fi.name, "-", 1))
126: if (-1 == (fi.fd = open(fi.name, FI_FL, 0))) {
127: warn("%s", fi.name);
128: return(leave_io(&fo, &fi, 1));
129: }
1.1 kristaps 130:
1.4 kristaps 131: if (0 != strncmp(fo.name, "-", 1))
132: if (-1 == (fo.fd = open(fo.name, FO_FL, 0644))) {
133: warn("%s", fo.name);
134: return(leave_io(&fo, &fi, 1));
135: }
1.1 kristaps 136:
1.5 ! kristaps 137: return(leave_io(&fo, &fi, begin_bufs(args, &fo, &fi)));
1.4 kristaps 138: }
1.1 kristaps 139:
140:
1.4 kristaps 141: static int
1.5 ! kristaps 142: leave_bufs(const struct md_buf *out,
! 143: const struct md_buf *in, int c)
1.4 kristaps 144: {
145: assert(out);
146: assert(in);
147: if (out->buf)
148: free(out->buf);
149: if (in->buf)
150: free(in->buf);
1.1 kristaps 151: return(c);
152: }
153:
154:
155: static int
1.5 ! kristaps 156: begin_bufs(const struct md_args *args,
! 157: struct md_buf *out, struct md_buf *in)
1.1 kristaps 158: {
159: struct stat stin, stout;
1.5 ! kristaps 160: int c;
1.1 kristaps 161:
1.5 ! kristaps 162: assert(args);
1.1 kristaps 163: assert(in);
164: assert(out);
165:
166: if (-1 == fstat(in->fd, &stin)) {
1.3 kristaps 167: warn("%s", in->name);
1.1 kristaps 168: return(1);
169: } else if (-1 == fstat(out->fd, &stout)) {
1.3 kristaps 170: warn("%s", out->name);
1.1 kristaps 171: return(1);
172: }
173:
1.3 kristaps 174: in->bufsz = MAX(stin.st_blksize, BUFFER_IN_DEF);
175: out->bufsz = MAX(stout.st_blksize, BUFFER_OUT_DEF);
1.1 kristaps 176:
1.3 kristaps 177: if (NULL == (in->buf = malloc(in->bufsz))) {
1.1 kristaps 178: warn("malloc");
1.4 kristaps 179: return(leave_bufs(out, in, 1));
1.3 kristaps 180: } else if (NULL == (out->buf = malloc(out->bufsz))) {
1.1 kristaps 181: warn("malloc");
1.4 kristaps 182: return(leave_bufs(out, in, 1));
1.1 kristaps 183: }
184:
1.5 ! kristaps 185: c = md_run(args, out, in);
! 186: return(leave_bufs(out, in, -1 == c ? 1 : 0));
1.1 kristaps 187: }
188:
189:
190: static void
191: usage(void)
192: {
193: extern char *__progname;
194:
1.4 kristaps 195: (void)printf("usage: %s [-o outfile] [infile]\n", __progname);
1.1 kristaps 196: }
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